Across
- 2. study of relationships between organisms and their environment
- 5. transparent layer of tissue at the front of the eye
- 8. regulation of glucose
- 9. electrical impulse from the eye
- 10. most basic unit of an element
- 13. temperature
- 14. create antibodies to fight off infection
Down
- 1. electromagnetic radiation in the form on light
- 3. white coat which protects the inner structures of the eye
- 4. hearing, speech, memory
- 6. purest forms of matter
- 7. a large geographical region compromising natural units
- 11. opening in the middle of the iris through which light passes to enter the eye
- 12. biological preparation that provides immunity to a particular infectious disease